This is an alphabetical list of companies that have at one-point or another been based in Ottawa:Abacus Data Alterna Savings Atkinson Film-Arts Bank of Ottawa Bell-Northern Research BreconRidge Bridgewater Systems Brookstreet Pictures Bruised Tongue Campeau Corporation Canada Deposit Insurance Corporation Canada Mortgage and Housing Corporation Canada Post Canadian Bank Note Company Canadian Broadcasting Corporation Canadian Commercial Corporation Ciel Satellite Group Cognos Corel CPAC CPCS Transcom Limited Defence Construction Canada Doyle Salewski Inc DragonWave Ekos Research Associates ENCON Group Inc. Epiphan Systems Eurocom Corporation Export Development Canada Farm Boy First Air Freimans Fuel Industries Funbag Animation Studios Gabriel Pizza Gandalf Technologies Giant Tiger Halogen Software Hydro Ottawa Ingenia Communications Corporation International Development Research Centre Iogen Corporation Kelp Records Klipfolio Knight Enterprises Kongsberg Gallium Ltd. KRP Properties Lacewood Productions Lee Valley Tools Level Platforms Loeb (supermarket) Lumenera Magma Communications Market Fresh Marshes Golf Club MediaMiser Mercury Filmworks MicroSystems International Minto Group Mitel MKC Networks NABU Network Neptec Design Group Newbridge Networks Nordion Le Nordir Ogilvy's Ottawa Car Company Ottawa Central Railway PlaSmart Pleora Pronexus ProntoForms Protecode Protus Public Sector Pension Investment Board Pure Spring Company QNX Software Systems Quickie Convenience Stores Red Quill Books SAW Video Mediatheque Shopify Siemens Healthineers Signority Skycron Solace Solidum Systems Spiderwort Tablo (DVR) Telesat Ten Broadcasting Tundra Semiconductor Versaterm West Wholesale Wilderness Tours Zarlink